package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.utils.HttpUtils;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberResponseVo;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.gulimall.auth.vo.SocialUser;
import com.google.common.collect.Maps;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;

import static com.atguigu.common.constant.AuthServerConstant.LOGIN_USER;

/**
 * @Author: fd
 * @Date 2021/8/6 16:52
 * @Description: 处理社交登录请求
 */
@Slf4j
@Controller
public class OAuth2Controller {

	@Value("${weibo.client_id}")
	private String clientId;

	@Value("${weibo.client_secret}")
	private String clientSecret;

	@Value("${weibo.grant_type}")
	private String grantType;

	@Value("${weibo.redirect_uri}")
	private String redirectUri;

	private final MemberFeignService memberFeignService;

	public OAuth2Controller(MemberFeignService memberFeignService) {
		this.memberFeignService = memberFeignService;
	}

	@GetMapping(value = "/oauth2.0/weibo/success")
	public String weibo(@RequestParam("code") String code, HttpSession session) throws Exception {

		Map<String, String> map = new HashMap<>(Maps.newHashMapWithExpectedSize(5));
		map.put("client_id",clientId);
		map.put("client_secret",clientSecret);
		map.put("grant_type",grantType);
		map.put("redirect_uri",redirectUri);
		map.put("code",code);

		//1、根据用户授权返回的code换取access_token
		HttpResponse response = HttpUtils.doPost("https://api.weibo.com", "/oauth2/access_token",
				"post", new HashMap<>(Maps.newHashMapWithExpectedSize(1)),
				map, new HashMap<>(Maps.newHashMapWithExpectedSize(1)));

		//2、处理
		if (response.getStatusLine().getStatusCode() == 200) {
			//获取到了access_token,转为通用社交登录对象
			String json = EntityUtils.toString(response.getEntity());
			//String json = JSON.toJSONString(response.getEntity());

			SocialUser socialUser = JSON.parseObject(json, SocialUser.class);

			//知道了哪个社交用户
			//1）、当前用户如果是第一次进网站，自动注册进来（为当前社交用户生成一个会员信息，以后这个社交账号就对应指定的会员）
			//登录或者注册这个社交用户
			System.out.println(socialUser.getAccess_token());

			// 调用远程服务，查看当前登录微博账号是否有注册会员信息
			R oauthLogin = memberFeignService.oauthLogin(socialUser);
			if (oauthLogin.getCode() == 0) {
				MemberResponseVo data = oauthLogin.getData("data", new TypeReference<MemberResponseVo>() {});
				log.info("登录成功：用户信息：{}",data.toString());

				//1、第一次使用session，命令浏览器保存卡号，JSESSIONID这个cookie
				//以后浏览器访问哪个网站就会带上这个网站的cookie
				// 子域之间：gulimall.com auth.gulimall.com order.gulimall.com
				// 发卡的时候（指定域名为父域名），即使是子域系统发的卡，也能让父域直接使用
				// new Cookie("JSESSIONID","data").setDomain("gulimall.com");
				// response.addCookie();

				// TODO 1、默认发的令牌。当前域（解决子域session共享问题）
				// TODO 2、使用JSON的序列化方式来序列化对象到Redis中
				session.setAttribute(LOGIN_USER,data);

				//2、登录成功跳回首页
				return "redirect:http://gulimall.com";
			} else {
				return "redirect:http://auth.gulimall.com/login.html";
			}
		} else {
			return "redirect:http://auth.gulimall.com/login.html";
		}

	}


}
